This single ingredient alone can address multiple skin concerns at once
Based on our experience testing the products of multiple peptide vendors, we wholeheartedly endorse the following two sources of high-quality GHK-Cu and other research chemicals
Nakajima, T., Inui, S
Preparation and in vivo evaluation of a topical hydrogel system incorporating highly skin-permeable growth factors, quercetin, and oxygen carriers for enhanced diabetic wound-healing therapy
A substance can qualify if it is used in an FDA-approved drug, has an applicable United States Pharmacopeia or National Formulary monograph, or appears on FDAs list of bulk drug substances for which there is a clinical need
Gorg B, Qvartskhava N, Voss P, Grune T, Haussinger D, Schliess F (2007)